"Sirius" is a very compact, yet versatile robot. The designer (Builderdude35) gave me permission to post his creation designed for the 2014-2015 FIRST Lego League (FLL) competition season. The robot's tall motorcycle wheels (#51378) + tires (#51380) make it very agile, and two EV3 Color Sensors up front allow it to align itself to lines. Lastly, an EV3 Medium Motor drives a "dog gear" in the front and back of the robot; these dog gears allow for power take-off (PTO) so motorized attachments can be switched out in a flash. The demo attachment (shown in purple on a render in this series) fits into the dog gear via a 3-axle hub. The Lego Digital Designer (LDD) .lxf Building Instructions file, along with a Parts List, will be available on Rebrickable.com soon. Be sure to visit Builderdude35's YouTube Channel ( www.youtube.com/channel/UCuXq-jiU0ANeBcF_Tvq1D7g ) for Lego Mindstorms EV3 programming tutorials and tips!
